Question

jan has only b black w white and r red marbles. if 1 marble is chosen at random is probability that the marble chosen will be red greater than probability that marble chosen is white?

Answer 1

P(red)=r/(b+w+r)
P(white)=w/(b+w+r)
if P(red)>P(white)
r/(b+w+r)>w/(b+w+r)
or r>w
number of red balls >number of white balls